i'm yet to buy 60mm macro (now is really dead season for bugs and flowers, i'm waiting until spring), but srf-11 ring flash came up really cheap at local classifieds webpage (1200kuna=around 200$) so i just had to buy it, it works great with E-M5. I've tried it with Tokina AT-X 90mm/2.5 macro lens and it really helps with taking macro shots (well,it's supposed to that ).

here is one sample i took (the fly was wery cooperative, being dead and all )